AT Hereford in 1897 Sinclair broke with the tradition of an Opening Service and sermon on the Tuesday morning, and followed instead the example set by Worcester in 1881. An ‘immense congregation’ was present to hear the Festival Chorus, orchestra and some of the principal soloists take part in a special Opening Service on Sunday morning, 12 September. The music was magnificent. At Sinclair's request Elgar had composed a Te Deum and Benedictus especially for the occasion, pieces instantly recognised by the critics as masterpieces of their kind. Also performed were Schubert's Symphony No. 8 in B minor (Unfinished); ‘How lovely is Thy dwelling-place’ from Brahms's German Requiem; Elgar's Imperial March; and the ‘Hallelujah’ chorus from Beethoven's Mount of Olives. Here was a blazing fanfare to herald not only a celebration for the Diamond Jubilee of a queen, but also the beginning of a new era for Three Choirs.

For the first time at Hereford, the chorus was drawn entirely from the Three Choirs cities. Sinclair, with customary energy and commitment, arranged combined rehearsals for months in advance. Highlights of the Festival included a new Magnificat by Parry; the Good Friday music and the Finale to the first act of Wagner's Parsifal, with Lloyd Chandos and Harry Plunket Greene; the Symphony No. 6 in B minor (Pathétique) by Tchaikovsky; and Beethoven's Missa solemnis with Emma Albani, Hilda Wilson, Edward Lloyd and Watkin Mills – ‘Rarely has that difficult music been attacked with greater spirit or more signal success.’

Named in the programme for the first time in 1897 were the newly appointed Organists of Gloucester and Worcester: Herbert Brewer and Ivor Atkins. There, too, was Sinclair's eighteen-year-old Assistant Organist, Percy Hull, who had been present at Sinclair's house on 5 June 1897 when Elgar had taken over his manuscript of the Te Deum and Benedictus: